GestSup versions before 3.2.61 fail to properly sanitize HTML email bodies in the IMAP LOGIN connector, allowing unauthenticated attackers to store arbitrary JavaScript in ticket descriptions and replies. Attackers can send emails to the monitored mailbox containing script tags and event handlers that execute in technician browsers, enabling ticket data theft and unauthorized actions.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 6
https://gestsup.fr/index.php?page=changelog
disclosure@vulncheck.com
https://gestsup.fr/index.php?page=download
disclosure@vulncheck.com
https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.62&type=p…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/gestsup-before-3.2.62-stored-xss-via-email…
disclosure@vulncheck.com
https://blog.spiizn.xyz/articles/remote-code-execution-turning-a-ticket-into-a-…
disclosure@vulncheck.com
https://gestsup.fr/index.php?page=download&channel=stable&version=3.2.61&type=p…
disclosure@vulncheck.com